Help with hen dog attack

Hey guys I still don't know how to change thread, but my grandma hen iggy got attacked by dogs and I found her flipped over stuck in a swamp while the other five her hiding and one died. We have been taking care of iggy for a while with three puntcher wounds and today I looked at her wound and it was brown and her skin was caved in a bit and I started to think she had some kind of skin disease or something, we bought vedericen for it. And have been spraying her three times a day idk what's happing with her skin.

Idk I hope she makes it! It's my grandmas hen and he's really close with them, and the one that died was her buddy and she was the dominant one, she saved the flock and all of the others are alive but injured